I wanted to make a measure that shows the occurrence frequency for every EventID per ContentID. For example in the table below I want to see EventID 3798 appears in 2 of 3 ContentID for an occurrence frequency of 66% and so on for each EventID. The EventID can appear one or many times per ContentID.
ContentID EventID
9941912 5027
9941912 52006
9941912 3798
9941912 3798
9941916 3798
9941916 4000
9941916 8809
9941916 415816
9941917 4000
9941917 4000
ContentID EventID
9941912 5027
9941912 52006
9941912 3798
9941912 3798
9941916 3798
9941916 4000
9941916 8809
9941916 415816
9941917 4000
9941917 4000